Cat-1 · T644 · AI & Agentic Developer Tooling

Agent Spend-Control Feature Matrix

Agent spend control now spans two layers that get discussed as if they were one: platforms that issue a scoped agent identity and meter its calls (Locus agent connections, Ramp user-delegation agents, Ramp standalone agents), and protocols that carry a portable spend authorization across parties (AP2 mandates, x402, Visa VIC token scope, Mastercard agentic tokens). This matrix puts all seven side by side on identity model, budget granularity, attenuation rule, expiry, revocation path, audit attribution, and receipt artifact, with a dated citation on every row. See also T276, the protocol-only comparator for credential model, signing, and settlement rail across the protocol rows.

⚠ Each row is a dated observation, not a standing claim: every cell cites the specific vendor or protocol documentation page it was read from, as of the date shown. Where a source did not publish a fact, the cell says "not published" rather than guessing. Verify against the linked source before relying on it, especially for the two rows marked limited early access or lighter-confidence citation.

Locus · Ramp AP2 · x402 · Visa VIC · Mastercard Zero PII Client-Side · No Network

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Scope & reliance This is a rules-only feature matrix built from published documentation, not a pricing comparison, a test of any product, and not a ranking. AINumbers has not tested, integrated with, or been endorsed by any vendor or protocol named here. Every claim about a third party is a checkable fact tied to a dated source; where the source did not say, the cell says so. Deterministic · zero PII · CC BY 4.0.

▸ Layers to include

Toggle rows in or out of the matrix. All seven are selected by default. Nothing here contacts any network; the matrix is a static, cited reference snapshot.